diff --git a/README.md b/README.md
index 66721d19..f02e0436 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,12 @@ Add the gem to your Gemfile (inside development group):
  gem 'guard-rspec', require: false
 ```
 
+Install guard-rspec:
+
+```
+$ bundle install
+```
+
 Add guard definition to your Guardfile by running this command:
 
 ```